From: Charlene Liu <charlene.liu@amd.com>
Date: Fri, 29 Dec 2017 19:11:58 -0500
Subject: drm/amd/display: disablePSR in UpdatePlanes in PassiveLevel
Git-commit: c4bd27ac1aeb89fceed42a7aa51ac187b923bb0e
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c
@@ -521,6 +521,9 @@ static void dcn10_dmcu_set_psr_enable(st
 	if (dmcu->dmcu_state != DMCU_RUNNING)
 		return;
 
+	dcn10_get_dmcu_psr_state(dmcu, &psr_state);
+	if (psr_state == 0 && !enable)
+		return;
 	/* waitDMCUReadyForCmd */
 	REG_WAIT(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 0,
 				dmcu_wait_reg_ready_interval,